One of the most notable elements of the plan: Those who make less
than $25,000 (or $50,000 for joint filers) will pay no income
taxes.

What will they do instead? File a one-page form with the IRS that
says, "I win."

From the tax plan:

If you are single and earn less than $25,000, or married and
jointly earn less than $50,000, you will not owe any income tax.
That removes nearly 75 million households — over 50% — from the
income tax rolls. They get a new one page form to send the IRS
saying, "I win," those who would otherwise owe income taxes will
save an average of nearly $1,000 each.

Trump's plan would also condense the number of income-tax
brackets to four from seven, with brackets of 0%, 10%, 20%, and
25%. It also takes aim at the "carried interest" loophole.